1518362121253 has 2 divisors, whose sum is σ = 1518362121254. Its totient is φ = 1518362121252.

The previous prime is 1518362121233. The next prime is 1518362121259. The reversal of 1518362121253 is 3521212638151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 858007606369 + 660354514884 = 926287^2 + 812622^2 .

It is a cyclic number.

It is not a de Polignac number, because 1518362121253 - 2¹³ = 1518362113061 is a prime.

It is a super-3 number, since 3×1518362121253³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1518362121259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 759181060626 + 759181060627.

It is an arithmetic number, because the mean of its divisors is an integer number (759181060627).

Almost surely, 2^{1518362121253} is an apocalyptic number.

It is an amenable number.

1518362121253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1518362121253 is an equidigital number, since it uses as much as digits as its factorization.

1518362121253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 40.

The spelling of 1518362121253 in words is "one trillion, five hundred eighteen billion, three hundred sixty-two million, one hundred twenty-one thousand, two hundred fifty-three".